Okay, so no manga or books yet then. That’s what I needed to know.
In that case, I’d recommend the following manga:
- Aria the Masterpiece (see book club)
- やがて君になる
- ひとりぼっちの〇〇生活 (no furigana, but otherwise very sparse on text and relatively easy)
- お兄ちゃんはおしまい!
I think those are all among the easiest manga I’ve read. I’d recommend starting with Aria, but if that isn’t to your liking the others should work as well. There are plenty of other easy manga that I could recommend, but those are the ones I found easy and enjoyed, which I find important.
As far as books, I don’t have any great recommendations. You should really start with some manga anyway and get some basic reading experience before moving onto books. Unfortunately I didn’t really enjoy any of the “beginner” books I read for practice early on. 魔女の宅急便 was a good learning experience for me (though really hard as a beginner), but I didn’t really care for it story-wise.